Sash holder



Oct. 26 1926. 1,604,486

F. B. SAUNDERS SASH HOLDER Filed March 5. 1925 INK/6722507":

flied. B. Saunders Patented Oct. 26, 192%.

-' testis-e FRED B. SAUNDERS, 0F FRAMINGI-IAM, MASSACHUSETTS.

SASI-I HOLDER.

Application filed March 5, 1925. Serial No.- 13,214.

This invention relates to slidable closures for windows and the like, and is particularly susceptible of embodiment in sash holders for window screens. One object of this invention is to provide a closure, or screen, which may be raised or lowered at any time with a minimum of effort, and without binding, irrespective of wear upon the bearin surfaces or of contraction or expansion of the supporting guides caused by climatic changes. Another object is the provision of such a closure having spring-tensioned rollers compensating for unevenness in the supporting guides, the'tension of the spring being readily increased or decreased by a manual. adjustment, accessible at all: times; sothat the closure, or screen, may be fitted to any of several windows in spite of slight variations in the distances between the sup porting guides. A further object is the provision of a window screen of inexpensive, yet durable construction, which will effectively prevent the admission of insects, and which may be fitted to the weather strips of any window, without the employment of special supports.

One embodiment of the invention is shown in the accompanying drawing of a window screen, whichis representative of any similar closure. In this drawing:

F ig. 1 is a partially broken elevation, showing portions containing the supporting rollers in sections;

Fig. 2 is an enlargedplan view partly in section, of one of the supporting rollers shown in Fig. 1;

Fig. 3 is an enlarged side view of the other roller shown in Fig. 1; and

Fig. i is a fragmentary section on theline 44tof Fig. 1.

The screen frame or sash 4, provided with the netting 5 in any suitable manner, is 0011-. structed to fit between the outer weather strips, or guides, 6, which form a part of the ordinary window casing, a space being provided between the side frames-and said strips to prevent binding therebetween. In order to prevent. the admission; of. insects through this space; ar'beading 7 extending from the outersurfacaof the screen-frame, overlapsthe weatherstrips.

The frameiis-preferably supported with; instrips 6 by two; pairs of. rollerssS,- which track, in grooves; 9, .channeled-in' the strips: The groove-9'slionld. .be-parallel tojthe outer surface of. thestrips; and. at such" distance therefrom that. the overlapping beading 7 will meet: the casing substantially fiatwise,

whereby the lip 7 will assist in maintaining the positionzof the rollers 8 within grooves 9 against inward movement of the sash 4t, and will provide a tight closure between said sash and the guide strip 9(see Fig. 4). The rollers on one side of the screen frame are preferably mounted in a carriage 10 which isfixed within a recess in the frame, one form of mounting being shown in Fig. 3, where the carriage is formed by bending a single sheet of metal to provide ears for the axle of the roller.

Transverse slots are provided in the opposite frame, wherein the roller and its mountings may be adjustably located at any desired position, relative to the casing strip 6, by turning a screw 11 in a'threaded hole in the plate 12 which is secured to the inner edge of the frame.

The mountings of these rollers 8 are best shown in Fig. 2, where the roller is carried by a U-shaped member 13, which slides within asleeve 14, the axle of the roller 8, being guided by slots 15 in the sleeve. The member 13 may be retained within the sleeve by tongues 16 formed by bending inwardly the ends of the opposed side strips of the sleeve. A coiled spring 19'is provided Within the sleeve to serve as a cushion for the member 13, and-to ipermitzthe roller 8 to roll smoothly in the groove 9, despite unevenness of depth of the groove.

By adjustment of the screw 11, the ten sion of the spring 17 may be increased or decreased to permit the roller to engage the groove 9, compensating for variations in distance between the strips 6 in different windows, or the roller may be retracted from the groove to'permit removal of the screen from the casing.

In order to prevent binding between the rollers 8 and grooves 9, due to contraction or expansion of the strips 6 or wear upon the grooves, therollers and grooves are so shaped that the bearing surface therebetween occurs only at or near the marginal edges ofv the grooves. By utilizing. such construction,.. the roller cannot be; pinched withinthe; groove uponswe'llingofvtheiwoodj of-by wearing upontheedges of thel groove, and freedom;ofJmovement of theroller'" in the groove-is substantially"unaffected by any deposit? of dirt or" other! substance in the bottomv of thergrboves -UneF formiof such construction is illustrated in Fig. 3, where a V-shaped roller engages a V-shaped groove, the apex angle of the groove, being more acute than that of the roller, so that an appreciable space exists at 18 between roller and groove. It has been found that satisfactory results are obtained when the apex angle of the V-shaped roller face is approximately 82, and when the angle at the apex of the groove 9 is approximately Since this purpose may be served by any construction whereby the face of a roller meets the marginal edges of a groove in line contact, it is intended that the construction indicated shall be representative of any roller and groove with this characteristic.

1 claim:

1. In combination with a window sash, a roller attached to the sash, and a window casing having an elongated groove receiving said roller for turning movement therein, the cross-sectional contour of the roller and groove being different so that the roller meets the marginal edges of the groove in longitudinal areas of narrow width, whereby freedom of movement of the roller in the groove is substantially unaffected by a deposit in the bottom of the groove.

2. In combination with a window sash, a roller attached to the sash, and a window casing having an elongate groove channeled therein to receive the roller, for turning movement, the roller being wider than the groove so that the roller bears on the sides of the groove, and the groove being sufficiently deep in the center to provide a space between the central portions of. the roller and groove when the roller is in contact with the sides of the groove, whereby freedom of movement of the roller in the groove is substantially unaffected by a deposit in the bottom of the groove.

In combination with a window sash, a roller adjustably attached to the sash, a window casing having an elongate groove channeled therein for receiving the roller, and means for adjusting the position of the roller with respect to the groove to permit the roller to turn therein, the contacting surfaces of the roller and of the groove being beveled and the bevel of the roller surfaces being greater than that of the groove surfaces, whereby freedom of movement of the roller in the groove is substantially unaffected by unequal expansion or contraction of the roller and groove transversely of the groove.

in combination with a window sash, a roller carried by the sash, a window casing having an elongate groove channeled therein for receiving the roller and spring means associated with the roller for normally tensioning the roller against the groove, the contacting surfaces of the roller and of the groove being beveled andthe bevel of the roller surfaces being greater than that of the groove surfaces, whereby freedom of movement of the roller in the groove is substantially unaffected by unequal expansion or contraction of the roller and groove transversely of the groove.

5. In combination with a window sash, a roller adjustably mounted within a recess in the sash, a window casing having an elongate groove channeled therein for receiving the roller, and a spring normally tensioning the roller against the groove, the roller being wider than the groove and having a beveled surface bearing upon the sides of the groove, said groove being sufficiently deep in the center to provide a space between the central portions of the roller and groove when the roller is normally contacting with the sides of the groove, whereby freedom of movement of the roller in the groove is substantially unaffected by a deposit in the bottom of the groove or by unequal expansion or contraction of the roller and groove.

6. In combination with a window sash, a sleeve loosely mounted in a transverse recess of the sash, a carriage sliding in said sleeve, a roller carried by said carriage, a window casing having an elongate groove channeled therein for receiving the roller, a spring bearing on said carriage to tension the roller against the groove, and means for adjusting the position of the sleeve to increase or decrease the tension of the spring, the crosssectional contour of the roller and groove being different so that the contacting surfaces between the roller and groove are defined by elongate areas of narrow width adjacent the edges of the groove, whereby freedom of movement of the roller in the groove is substantially unaffected by a deposit in the bottom of the groove or by unequal expansion or contraction of the roller and groove.

7. In combination with a window sash. a roller carried by thesash, a window casing having an elongate groove channeled therein for receiving the roller, a spring normally tensioning the roller against the groove, the contacting surfaces of the roller and of the groove being beveled and the bevel of the roller surfaces being greater than that of the groove surfaces, and a longitudinal lip projecting laterally from the outer side of the sash substantially to meet the window casing, whereby a tight closure between said sash and said casing is effected, and the position of the roller within the groove is secured against inward movement of the sash.

8. The combination with a window sash and a window casing spaced from the sash, of a roller carried by the sash, a window casing having an elongate groove channeled therein for receiving the roller, a spring associated with the roller normally tensioning the roller against the groove, means for increasing or decreasing the tension of the spring upon the roller, and a longitudinal lip projecting from one edge of the sash, along the entire length of the outer face thereof substantially to meet the outer face of said Window casing fiatWise, whereby the space between the sash and the casing is closed, said lip also guiding; the rollers Within the groove, and securing the roller within the groove against inward movement of the sash.

Signed by me at Boston Massachusetts, this second day of March, 1925.

FRED B. SAUNDERS. 

